Please use this identifier to cite or link to this item: https://doi.org/10.1016/j.schres.2011.10.020
Title: Asymmetry of lexico-semantic processing in schizophrenia changes with disease progression
Authors: Lam, M.
Collinson, S.L. 
Sim, K.
Mackay, C.E.
James, A.C.D.
Crow, T.J.
Keywords: Cerebral asymmetry
Divided visual field
Early onset schizophrenia
Length of illness
Temporal lobe
Issue Date: Feb-2012
Source: Lam, M.,Collinson, S.L.,Sim, K.,Mackay, C.E.,James, A.C.D.,Crow, T.J. (2012-02). Asymmetry of lexico-semantic processing in schizophrenia changes with disease progression. Schizophrenia Research 134 (2-3) : 125-130. ScholarBank@NUS Repository. https://doi.org/10.1016/j.schres.2011.10.020
Abstract: Background: Are anomalies of cerebral asymmetry integral to the disease process? Here, we examined the influence of age, chronicity and age of onset of illness in 34 patients with early onset schizophrenia and 20 controls in relation to structural asymmetries of the temporal lobe and performance asymmetries on a semantic language lexical decision task. Methods: Volumetric MRI and a novel divided visual field probe of lateralised lexico-semantic language were assessed in patients with early onset schizophrenia (EOS) and controls. Novel ratios of age-illness overlap and directional asymmetry were developed in order to examine the association of chronicity factors to asymmetry. Results: Loss of laterality on the lexical decision task and discordant structural asymmetry were correlated with duration of illness but were not seen in younger, less chronic patients. Reduced lateral processing speed, and discordant structural asymmetry were associated with greater proportion of lifetime schizophrenia. Conclusion: Although the conclusions are limited by the cross sectional nature of the study, anomalies of cerebral asymmetry in early onset patients may be an index of disease progression, and reflect directly on the disease process. © 2011 Elsevier B.V.
Source Title: Schizophrenia Research
URI: http://scholarbank.nus.edu.sg/handle/10635/49886
ISSN: 09209964
DOI: 10.1016/j.schres.2011.10.020
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.

SCOPUSTM   
Citations

9
checked on Dec 13, 2017

WEB OF SCIENCETM
Citations

8
checked on Nov 2, 2017

Page view(s)

57
checked on Dec 16, 2017

Google ScholarTM

Check

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.